-75=-12n-3n

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Solution for -75=-12n-3n equation: 



-75=-12n-3n

We move all terms to the left:

-75-(-12n-3n)=0

We add all the numbers together, and all the variables

-(-15n)-75=0

We get rid of parentheses

15n-75=0

We move all terms containing n to the left, all other terms to the right

15n=75

n=75/15

n=5

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